Title :
The role of channel distribution information in the cross-layer design of opportunistic scheduler for MIMO networks
Author :
Tan, Sheu-Sheu ; Anderson, Adam ; Zeidler, James
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, La Jolla, CA, USA
Abstract :
In this paper, we design a new class of cross-layer opportunistic channel access scheduling framework for multiple-input multiple-output (MIMO) networks through exploitation of channel distribution information (CDI) in a form of full spatial correlation matrix. Due to propagation delay, infrequent channel updates, and time-varying node position, channel knowledge becomes outdated and scheduler based solely on channel state information (CSI) can experience severe performance degradation. By utilizing the higher stability of channel statistics such as CDI, we can achieve `differential´ time-scale equalization in MIMO networks between Physical (PHY) and Media Access Control (MAC) layer and reduce the frequency and amount of feedback between nodes.
Keywords :
MIMO communication; matrix algebra; scheduling; statistical analysis; MIMO networks; channel distribution information; channel knowledge; channel state information; channel statistics; cross-layer design; cross-layer opportunistic channel access scheduling framework; differential time-scale equalization; infrequent channel updates; media access control layer; multiple-input multiple-output networks; opportunistic scheduler; performance degradation; physical layer; propagation delay; spatial correlation matrix; time-varying node position; Array signal processing; Correlation; Data communication; MIMO; Receivers; Throughput; Transmitters;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2010 Conference Record of the Forty Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-9722-5
DOI :
10.1109/ACSSC.2010.5757807
